Is C34 a billable ICD-10-CM code?

No. C34 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does C34 sit in the tabular list?

Neoplasms (C00-D49), in the block Malignant neoplasms of respiratory and intrathoracic organs (C30-C39).

What cannot be coded together with C34?

C34 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

C34

C34 — Malignant neoplasm of bronchus and lung

Non-billable headerICD-10-CM

C34 is a non-billable header ICD-10-CM code for malignant neoplasm of bronchus and lung. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Kaposi's sarcoma of lung (C46.5-)
malignant carcinoid tumor of the bronchus and lung (C7A.090)

Use additional code

Add a secondary code to capture the detail described below.

code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Risk adjustment

C34 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead C34

6 child codes. Green means billable.

Questions about C34

Is C34 a billable ICD-10-CM code?: No. C34 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does C34 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of respiratory and intrathoracic organs (C30-C39).
What cannot be coded together with C34?: C34 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.